RM38N0EC _57 Power Source / Network _111828 POWER DISTRIBUTION _0505336 POWER INTEGRATION SYSTEM U

POWER DISTRIBUTION  POWER INTEGRATION SYSTEM  TERMINALS OF ECU  


NOTICE:

When disconnecting and reconnecting the auxiliary battery.

Click hereGeneral>SETUP>WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL>WORK PROCEDURE


HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click hereGeneral>SETUP>WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL>AUTOMATIC LEARNING CHART


CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND POWER DISTRIBUTION BOX ASSEMBLY


B704094N01
3.396,3.25 3.781,3.479 0.385,0.229 1.521,4.5 1.906,4.729 0.385,0.229 3.875,4.5 4.26,4.729 0.385,0.229 5.698,4.5 6.083,4.729 0.385,0.229 1.146,6.104 1.531,6.333 0.385,0.229 2.938,6.104 3.323,6.333 0.385,0.229 4.25,6.104 4.635,6.333 0.385,0.229 3.438,7.781 3.823,8.01 0.385,0.229 1.24,3.24 1.625,3.469 0.385,0.229 5.26,6.104 5.646,6.333 0.385,0.229 6.26,6.104 6.646,6.333 0.385,0.229 5.458,3.25 5.844,3.479 0.385,0.229 1.958,1.229 2.26,1.229 false 4.26,0.813 4.26,0.26 4.26,0.26 4.438,0.26 false 1.958,1.552 2.26,1.552 false 1.958,1.875 2.26,1.875 false 0.969,1.885 1.281,2.083 0.313,0.198 10 false 4H 1.167,2.385 1.479,2.583 0.313,0.198 10 false 4F 0.979,1.083 1.292,1.281 0.313,0.198 10 false 4E 0.979,1.594 1.292,1.792 0.313,0.198 10 false 4D 6.052,2.094 6.365,2.292 0.313,0.198 10 false 4A 2.333,1.49 2.792,1.688 0.458,0.198 10 false E36 2.333,1.813 2.792,2.01 0.458,0.198 10 false E37 4.5,0.198 4.885,0.385 0.385,0.188 10 false MB 1.333,3.292 1.802,3.5 0.469,0.208 10 false E37 3.49,3.292 3.948,3.49 0.458,0.198 10 false E36 3.052,6.146 3.51,6.344 0.458,0.198 10 false 4D 5.813,4.542 6.271,4.74 0.458,0.198 10 false 4A 3.542,7.813 4,8.01 0.458,0.198 10 false MB 6.031,1.729 6.344,1.927 0.313,0.198 10 false 4B 6.031,1.146 6.344,1.344 0.313,0.198 10 false 4C 0.969,2.146 1.281,2.344 0.313,0.198 10 false 4G 3.979,4.552 4.292,4.75 0.313,0.198 10 false 4B 1.635,4.542 1.948,4.74 0.313,0.198 10 false 4C 1.26,6.135 1.573,6.333 0.313,0.198 10 false 4E 4.365,6.146 4.677,6.344 0.313,0.198 10 false 4H 5.354,6.146 5.667,6.344 0.313,0.198 10 false 4G 6.375,6.146 6.688,6.344 0.313,0.198 10 false 4F 5.542,3.302 6,3.5 0.458,0.198 10 false E38 2.323,1.156 2.781,1.354 0.458,0.198 10 false E38

a.

Remove the power distribution box assembly and the main body ECU (multiplex network body ECU).

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU>REMOVAL


b.

Connect the power distribution box assembly connectors.


c.

Measure the voltage and resistance according to the value(s) in the table below.

Terminal No. (Symbol) Terminal Description Condition Specified Condition

*1: for Gasoline Model

*2: for HV Model

MB-13 (GND1) - Body ground Ground Always Below 1 Ω
MB-14 (GND2) - Body ground Ground Always Below 1 Ω
MB-26 (BECU) - Body ground Auxiliary battery power supply Always*1
Ignition switch off*2 		11 to 14 V
MB-27 (IGR) - Body ground Ignition power supply (IG signal) Ignition switch ON 11 to 14 V


d.

Install the power distribution box assembly and the main body ECU (multiplex network body ECU).


e.

Measure the voltage and check for pulses according to the value(s) in the table below.

Terminal No. (Symbol) Terminal Description Condition Specified Condition

*1: for HV Model

*2: Models without Position Memory Function

4B-29 - Body ground R shift position switch signal*1 Ignition switch ON, shift position is not R Below 1.5 V
Ignition switch ON, shift position is R 8 to 14 V
4D-5 - Body ground CXPI communication line Ignition switch off Below 1 V
Ignition switch ON Pulse generation
4E-43 - Body ground Rear window defogger signal (output) Rear window defogger switch off Below 1.5 V
Rear window defogger switch on 8 to 14 V
4B-2 - Body ground Mirror heater drive voltage (output)*2 Rear window defogger switch off Below 1.5 V
Rear window defogger switch on 8 to 14 V
4C-10 - Body ground Power retract mirror motor drive voltage (output)*2 Outer rear view mirror assembly moving to retract position. 8 to 14 V
Outer rear view mirror assembly not moving. Below 1.5 V
4C-21 - Body ground Power retract mirror motor drive voltage (output)*2 Outer rear view mirror assembly moving to driving position. 8 to 14 V
Outer rear view mirror assembly not moving. Below 1.5 V
4E-7 - Body ground Tail light output Tail light not illuminated Below 1.5 V
Tail light illuminated 8 to 14 V
4E-38 - Body ground Back-up light output Ignition switch ON, shift position is not R Below 1.5 V
Ignition switch ON, shift position is R 8 to 14 V